code: def test_merger() -> None:  # noqa: D
      items_to_merge: List[NumberTuple] = [
          NumberTuple(()),
          NumberTuple((1,)),
          NumberTuple((2, 3)),
      ]
  
      assert NumberTuple.merge_iterable(items_to_merge) == NumberTuple(
          (1, 2, 3)
      )
  
file_path: metricflow/metricflow/test/collection_helpers/test_merger.py
imports: from __future__ import annotations
  from dataclasses import dataclass, field
  from typing import List, Tuple
  from typing_extensions import override
  from metricflow.collection_helpers.merger import Mergeable
label_desc: Use image node_id 1 for calling a global function with example usage: test_merger() without return types